Quarterly Summary (Unaudited) (Tables)

12 Months Ended

Jan. 27, 2019

Quarterly Financial Data [Abstract]

Schedule of quarterly financial information

The following table sets forth our unaudited consolidated financial results, for the last eight fiscal quarters:

	Fiscal Year 2019 Quarters Ended
	January 27, 2019		October 28, 2018		July 29, 2018		April 29, 2018
	(In millions, except per share data)
Statements of Income Data:
Revenue	$	2,205	$	3,181	$	3,123	$	3,207
Cost of revenue	$	998	$	1,260	$	1,148	$	1,139
Gross profit	$	1,207	$	1,921	$	1,975	$	2,068
Net income (1)	$	567	$	1,230	$	1,101	$	1,244
Net income per share (1):
Basic	$	0.93	$	2.02	$	1.81	$	2.05
Diluted	$	0.92	$	1.97	$	1.76	$	1.98

(1) In the third and fourth quarters of fiscal year 2019, we recorded U.S. tax reform benefits of $138 million and $230 million, respectively, associated with the completion of our accounting for the enactment-date income tax effects of the TCJA. Refer to Note 13 of these Notes to the Consolidated Financial Statements for a discussion regarding the U.S. tax reform.

	Fiscal Year 2018 Quarters Ended
	January 28, 2018		October 28, 2017		July 29, 2017		April 29, 2017
	(In millions, except per share data)
Statements of Income Data:
Revenue	$	2,911	$	2,636	$	2,230	$	1,937
Cost of revenue	$	1,110	$	1,067	$	928	$	787
Gross profit	$	1,801	$	1,569	$	1,302	$	1,150
Net income (1)	$	1,118	$	838	$	583	$	507
Net income per share (1):
Basic	$	1.84	$	1.39	$	0.98	$	0.86
Diluted	$	1.78	$	1.33	$	0.92	$	0.79

(1) In the fourth quarter of fiscal year 2018, we recorded a U.S. tax reform provisional net tax benefit of $133 million associated with the one-time transition tax on our historical foreign earnings and the adjustment of deferred tax balances to the lower corporate tax rate. Refer to Note 13 of these Notes to the Consolidated Financial Statements for a discussion regarding the U.S. tax reform.